Pump



G. w. LEIMAN PUMP Filed Feb. 24, 1923 2 Sheets-Sheet 1 Hill! IIIII l- -FINVENTOR A TTORNE XS Nov. 18, 1924.

G. w. LEIMAN PUMP 1925 2 Sheets-Sheet 2 Filed Feb. 24

llllll l l l l IL r l l J n IL A TTOR NE Y5 Patented Nov. 18, 1924.

UNITED STATES PATENT OFFICE.

GEORGE W. LEIMAN, OF NEWARK, NEW JERSEY, ASSIGNOR TO'LEIMAN BROS, OF NEWYORK, N. Y., A COPARTNEBSHIP COMPOSED OE WILLIAM H. LEIMAN, GEORGE W.LEIMAN, GUSTAVE A. LEIMAN, EDWARD C. LEIMAN, AND JOHN LEIMAN.

PUMP.

Application filed February To all whom it may concern:

Be it known that I, GEORGE W. LEIMAN, a citizen of the United States,and resident of Newark, in the county of Essex and State of New Jersey,have invented a new and useful Improvement in Pumps, of which thefollowing is a specification.

This invention relates to rotary pumps and more particularly to a pumpin which a fluid is drawn into or expelled from the pump by oscillatorymeans, the object being to construct and arrange the parts so that theymay be so balanced as to be rotated at a high rate of speed, therebyreducing the friction of the parts to a minimum, and increasing theefliciency in operation.

Another object is to provide a pump constructed and arranged to producea delivery of the fluid at two points independent of each other.

Another object is to provide certain improvements in the form,construction and arrangement of the parts, whereby the above named andother objects may be eflectively attained.

A practical embodiment of my invention is represented in theaccompanyingdrawings in which- Fig. 1 represents a side elevation of my improvedpump.

Fig. 2 represents a vertical section taken in the plane of theline II-IIof Fig. 1 looking in the direction of the arrows.

Fig. 3 rep-resents a vertical section taken in the plane of the lineIII-III of Fig. 1 looking in the direction of the'arrows.

Fig. 4 represents a vertical section taken in the plane of the lineIV-IV of Fig. 3 looking in the direction of the arrows.

Fig. 5 represents a horizontal sectiontaken in the plane of the line V-Vof Fig. 2 looking in the direction of the arrows.

Fig. 6 represents a horizontal section taken in the plane of the lineVI-VI of.

Fig. 3 looking in thedirection of the arrows.

The casing of the pump denoted by 1 is of ,cylindrical construction andprovided with heads 2, 3 secured thereto by screws 4. The heads areprovided with outwardly extended hubs 5, 6 respectively. The head 3 isalso provided with an inwardly extended hub 7, which is disposedeccentrically with respect to the hubs 5, 6 and to the driving shaft 8,which extends through the 24, 1923. Seriafl No. 620,884.

hubs. A cup shaped element 9 is mounted to rotate within the casin 1 andis secured to rotate with the shaft 8 y means of a key and splineconnection 10, as shown in Figs. 2 and 4.

A rotor 11 is 'ournaled on the eccentrically disposed hu 7 within thecup shaped element 9. The peripheral walls of the rotor are concentricwith respect to the interior wall of the casing, and the inner and outerwalls of the cup shaped element are eccentric with respect to the wallsof the rotor 11 and casing 1 By this construction and arrangement of theelement 9 and rotor 11 a chamber 12 of crescent shape is formed betweenthe outer wall of the cup shaped element 9 and the inner wall of thecasing 1, while a similar crescent shaped chamber 13 is formed withinthe cup shaped element 9 between the interior wall of the element andthe exterior wall of the rotor 11. The

rotor is connected to rotate with the cup shaped element 9 by means of alink 14, one end of which is provided with an enlarged head 15 whichoscillates in a socket 16- in the rotor, while the other end hasasimilar enlarged head 17 which rocks in a socket 18 in the c ip shapedelement 9. This link 14 is arranged to move radially in a. cutawayportion 19 ot the cup shaped element 9 so that the outer wall 20 of thelink meetswith the inner wall of the casing, while the inner wall 21 isadapted to engage the outer wall of the rotor 11. A spring pressedpacking 22 is disposed in the element 9 to engage the curved wall 23 ofthe link 14 to prevent leakage between the chambers 12 and 13.

I A similar packing 21 is arranged in the link to contact with theinterior wall of the casing, to prevent any leakage past the link in thechamber 12. A wing 25 having an enlarged head 26 mounted in a socket 27in the element 9 is arranged to oscillate in a cut-away portion 28' ofthe element 9. A spring pressed packing 29 engages the curve wall 30 ofthe wing to prevent leakage between the chambers 12 and 13. A similarpacking 31 is mounted in the .wing to en age the wall of the casing andprevent eakage past the wing in the chamber the wing and the inner wall21 of the link conform to the curvature of the inner wall of theelement, thereby permitting a point of contact between the walls of therotor, element and easing at all times.

The link 14 and wing 25 are diametrically opposed in the element 9 andoperate at times to divide each of the chambers 12 and 13 into twoseparate compartments so that one compartment in each of the chamberswill be receiving and compreming while the companion compartment will beexhausting its compressed charge.

The casing 1 is provided with an inlet 34.- and an outlet 35, whichinlet and outlet communicate with the chamber 12. An inlet port 36 andan outlet port 37 disposed in the head 3 are arranged to communicatewith the chamber 13. lit will therefore be seen that each of the movingparts are mounted to rotate on fixed bearings which are firmly andrigidly supported. Furthermore, the rotating elements are perfectlybalanced, since they rotate concentrically on their bearings, while notconcentrically with' respect to each other, thereby permitting a veryhigh rate of speed, increasing the chiciency in operation and reducingthe friction of the contacting surfaces to a minimum.

In operation; as the element 9 is rotated by means of the shaft 8 in thedirection indicated by the arrows, the air received through the inletport 34 into the chamber- 12, between the link 14 and the wing 25, willbe carried forward to the outlet port 35 and forced out, the operationbeing repeated as the wing and link succeed each other. Simultaneouslythe element 9, through the link 14 moves the rotor 11 on the hub 7, sothat air admitted through the inlet port 36' into the chamber 13 of theelement 9 and between the wing 25 and link 14: will be carried around tothe outlet port 37 and exhausted.

It is evident that various changes may be resorted to in theconstruction, form and arrangement of the several parts withoutdeparting from the spirit and scope of my invention; hence, ll do notintend to be limited to the specific details herein shown and described,except as they may be included in the claims.

What I claim is 1. A pump comprising a cylinder having heads, a shafteccentrically mounted in said cylinder and heads, inlet and outlet portsfor the cylinder, a rotary element in the cylinder secured to saidshaft, a cup sha chamber. in said. element, inlet and outlet ports forthe chamber, a rotor in the chamber, and means connecting the elementand rotor.

2. A pump comprising a cylinder having;

heads, a shaft eccentrically mo inted in mid cylinder and heads, inletand outlet ports for the cylinder, a rotary element in the cylindersecured to said shaft, a cup shaped chamber in said element, inlet andoutlet ports forthe chamber, one of said heads being provided with a hubextending into the chamber, a rotor mounted on said hub, and meansconnedting the element and rotor.

3. A. pump comprising a cylinder having heads, a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft, a cupshaped chamber in said element, inlet and outlet ports for the chamber,one of said heads being provided with a hub extending eccentrically intothe chamber, a rotor mounted on said hub, and means connecting the element and rotor.

t. A. pump comprising a cylinder having heads, a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft, a cupshaped chamber in said element, inlet and outlet ports for the chamber,one of said heads being provided with a hub extending eccentrically.

into the chamber, a rotor mounted on said hub, and means connecting theelement and rotor, said means being arranged to contact with thecylinder.-

5. A pump comprising a cylinder having heads, a shaft eocentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft, a cup.shaped chamber in said element, inlet and outlet ports for the chamber,one of said'heads being provided with a hub extending eccentrically intothe chamber, a rotor mounted on said hub, and means connecting theelement and rotor, said means being movable in the element to contactwith the cylinder.

6. A pump comprising a cylinder having heads, a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shafua cupshaped chamber in said element, inlet and outlet ports for the chamber,one of said heads being provided with a hub extending eccen-,

trically into the chamber, a rotor mounted on said hub, and meansconnecting the element and rotor, said means being arranged to oscillatein the element to contact with the cylinder.

7. A pump comprising acylinder having heads, a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft. achamber in said element, inlet and outlet ports for the chamber, one ofsaid heads being proyided with a hub extending eccentrically into thechamber, a rotor mounted on said ill Ell)

Elli

hub, and an oscillating means connecting the element and rotor, saidelement having a. cut

- away portion for'the passage of the means therethrough der.

8. A pump comprising a cylinder having heads. a shaft eccentricallymounted in said for contacting with the cylincylinder and heads, inletand outlet ports for the cylinder, a rotary element in the cylindersecured to said shaft. a chamber in said element, inlet and outlet portsfor the chamber, one of said heads being provided'with a hub extendingeccentrically into the chamber, a rotor mounted on said hub, and a linkconnecting the element and rotor, said link being arranged to oscillatein the element to contact with the cylinder.

9. A pump comprising a cylinder having heads. a shaft. eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder. a rotary element in the cylinder secured to said shaft. achamber in said element. inlet and outlet ports for the chamber. one ofsaid heads being provided with a hub extending eccentrically into thechamber, a rotor mounted on said hub. and a link having an enlarged headand hub. andan oscillating link connecting the .element and rotor. saidelement havlng a cut away portion for the passage of the linktherethrough for contacting with the cylnder.

ll. A pump comprising a cylinder having heads. a shaft eccentrieallymounted in said cvlinder and heads. inlet and outlet ports for thecylinder. a rotary element in the cylinder 'secured to said shaft, achamber in said element. inlet and outlet ports for the V chamber. oneof said heads being provided with a hub extending eccentrically into thechamber. a rotor mounted, on said hub,-

means connecting the element and rotor, and

.a device for engaging the cylinder and rotor.

12. A pump comprising a cylinder hav-,

ing heads. a shaft ecccntrically mounted in said cylinder and heads,inlet and outlet ports for the cylinder. a rotary element in thecylinder secured to said shaft, a cham- 7 her in said element, inlet andoutlet ports for the chamber, one of saidyheads being provided with ahub extending eccentrically into the chamber, a rotor mounted onsaidchamber, one of said heads bein hub, means connecting the elementand rotor, and a device carried by the element for en aging the cylinderand rotor.

13. 2. pump comprising a cylinder having heads, a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft, achamber in saidelement, inlet and outlet. ports for the chamber, one ofsaid heads being provided with a hub extending eccentrically into thechamber, a rotor mounted on. said hub, means connecting the element and.rotor, and an oscillating device carried by the element for engagingthe cylinder and rotor.

14. A pump comprising a cylinder having heads, a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft, achamber in said element, inlet and outlet orts for the chamber, one ofsaid. heads bem provided with a hub extending eccentrical y into thechamber, a rotor mounted .on said hub, means connecting the element androtor, and an oscillating device carried by the element,

said element being cut away for the passage of the device therethroughfor engaging the cylinder and rotor.

15. A pump comprising a cylinder having heads, a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft, a.chamber in said element, inlet and outlet ports for the provided with ahub extending eccentrically into the chamber, a rotor mounted on saidhub, means'con iecting theelemeut and rotor, and

a. device having an enlarged headand socket connection with the element,said element being cut away for the passage of the device -therethroughfor engaging the cylinder and rotor.

16. A pump com 'irising a cylinder having heads. a shaft eccentricallymounted in said cylinder and heads, inlet and outlet ports for thecylinder, a rotary element in the cylinder secured to said shaft, achamber in said element, inlet and outlet ports for the chamber, one ofsaid heads beln provided with a hub extending eccentrical y into thechamber, a rotor mounted on said hub, meansconnecting the element androtor,

and a device carried by the element, said de- 1 vice comprising a winghaving an enlarged head and screw connection with the element, saidelement being cut away for the passa e of the wing therethrouglrforengaging t e cylinder and rotor.

In testimony, that I claim the foregoing as my invention, I have signedmy name this 17th day of February, 1923. p

' GEORGE W. Lamar.

